Check the listing for details. CO2 Regulator by Carbon Accelerator for C02 Tanks - Gauge for Pressure and Flow. Condition: New. Listed at 68.85 USD. The Carbon Accelerator CO2 Regulator has all the features every hydroponics grower needs including flow rate modulation, pressure gauge, 6' power cord, and easy to follow instructions. Whether you're connecting it to a simple timer or a more sophisticated CO2 PPM meter, the Carbon Accelerator CO2 Regulator will increase your plants yields by 15-30% when used properly. CO2 Regulator w/ Flow Meter - REG-1 features an accurate, easy to adjust CO2 flow meter that supports from 0.5 to 15 cubic feet per hour, a pre-set regulator that never needs adjusting, and an electronic solenoid valve. Each CO2 regulator also comes with a tank pressure gauge, an easy to read flow meter, and a 6′ foot power cord. This regulator also works with any 120V device for easy installation. Once the CO2 regulator is installed, simply add the tubing needed to disperse the CO2 evenly throughout your room by attaching the tubing to the back of an oscillating fan for even dispersion. If you are using this without a digital CO2 controller, you will need to use a timer. This regulator is backed by a 3-year full exchange warranty as well. This CO2 Regulator NOT UL Listed and CE Approved. Flow Rate Range: 0.5 to 15 Square Feet Per HourIncludes Tank Pressure GuagePre-Set RegulatorEasy To Read Square CO2 Flow MeeterElectronic Solenoid Valve6-Foot Power CableTubing Sold Separately Note: In order to ensure packages are delivered promptly and securely, all orders exceeding $250 require a signature upon delivery.Orders under $250 may also require a signature on a case by case basis.